java - SpringMVC JSP: Method not called on initial page load -
i want springmvc call method when my-site.com loads adds attributes model other working methods do. used annotation:
@requestmapping(value = "/", method = requestmethod.get) the problem is, spring ignores method reason, yet allows else work. work-around have declare this:
@requestmapping(value = "/unnecessary-page", method = requestmethod.get) and put link my-site.com/unnecessary-page on main page. strange. how work way intended?
edit: web.xml file:
<?xml version="1.0" encoding="utf-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemalocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <!--dispatcher config--> <servlet> <servlet-name>dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.dispatcherservlet</servlet-class> <init-param> <param-name>contextconfiglocation</param-name> <param-value>web-inf/dispatcher-servlet.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--application config--> <context-param> <param-name>contextconfiglocation</param-name> <param-value>/web-inf/applicationcontext.xml</param-value> </context-param> <!-- creates spring container shared servlets , filters --> <listener> <listener-class>com.web.search.context.contextfinalizer</listener-class> </listener> </web-app>
@requestmapping(value = "/*") try remove line. think problem, hope so.
index.jsp
<html> <body> <h2>${mgs}</h2> </body> </html> homepagecontroller.java
@controller public class homepagecontroller { @requestmapping(value = "/", method = requestmethod.get) public string gethomepage(modelmap map) { map.addattribute("mgs", "hello, have nice day"); return "index"; } } dispatcher-servlet.xml
<?xml version="1.0" encoding="utf-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemalocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd "> <!-- use @component annotations bean definitions --> <context:component-scan base-package="ltvnc.java.lichking.*" /> <!-- use @controller annotations mvc controller definitions --> <mvc:annotation-driven /> <!-- view resolver --> <bean id="viewresolver" class="org.springframework.web.servlet.view.internalresourceviewresolver"> <property name="prefix" value="/views/" /> <property name="suffix" value=".jsp" /> </bean> </beans> web.xml
<?xml version="1.0" encoding="utf-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemalocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="webapp_id" version="3.0"> <display-name>archetype created web application</display-name> <servlet> <servlet-name>dispatcher</servlet-name> <servlet-class> org.springframework.web.servlet.dispatcherservlet </servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app> pom.xml
<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelversion>4.0.0</modelversion> <groupid>ltvnc.java.lichking</groupid> <artifactid>example</artifactid> <packaging>war</packaging> <version>0.0.1-snapshot</version> <name>example maven webapp</name> <url>http://maven.apache.org</url> <properties> <spring.version>4.1.1.release</spring.version> </properties> <dependencies> <dependency> <groupid>junit</groupid> <artifactid>junit</artifactid> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-context</artifactid> <version>${spring.version}</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-core</artifactid> <version>${spring.version}</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-webmvc</artifactid> <version>${spring.version}</version> </dependency> </dependencies> <build> <finalname>example</finalname> <plugins> <plugin> <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-compiler-plugin</artifactid> <version>3.3</version> <configuration> <source>1.7</source> <target>1.7</target> </configuration> </plugin> </plugins> </build> </project> it display "hello, have nice day" when start app url http://localhost:7080/example/
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